Gig Auto-neg on 7020SR-24C2

Documentation says that one gig ethernet auto negotiation is supported on the 7020SR-24C2. Our preliminary testing shows a different ability to negotiate when port 23 is used (works) then when ports 2,3,5 are used (did not work). From previous experience, we know that the third band of ports in the 7504 modules, ports 25-36, do not support Gig auto-negotiation because the ASIC for those ports is optimized for 10G. Where can I find out if the same optimization is happening on the 7020SR-24C2?

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